#include "iostream"
#include "cstring"

using namespace std;

class Trapezium
{
private:
  int x1, y1, x2, y2, x3, y3, x4, y4;

public:
  void initial(int x1, int y1, int x2, int y2,
               int x3, int y3, int x4, int y4)
  {
    this 
  }
}